There's nothing more frustrating than having something completed, only to find out it was done wrong when it's too late to fix it. Imagine the severity if it's your last will and testament.
While Illinois recognizes many wills--including some in rather simple forms--the requirements are still very strict. Do-it-yourself "will kits" and online forms have become common as the internet has grown. Any estate plan is subject to probate and the state's meticulous regulation. If you fill out a "will kit" wrong, your will is either invalid or it may benefit the wrong people.